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Magnetic behavior of the novel pentagonal-bipyramidal erbium(iii) complex (Et3NH)[Er(H2DAPS)Cl2]: high-frequency EPR study and crystal-field analysisстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Spillecke Lena, Koo Changhyun, Maximova Olga, Mironov Vladimir S., Kopotkov Vycheslav A., Korchagin Denis V., Vasiliev Alexander N., Yagubskii Eduard B., Klingeler Rüdiger
- Журнал: Dalton Transactions
- Том: 50
- Номер: 48
- Год издания: 2021
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 18143
- Последняя страница: 18154
- DOI: 10.1039/d1dt03228c
- Аннотация: We report the synthesis, crystal structure and magnetic properties of the new heptacoordinated mononuclear erbium(III) complex (Et3NH)[Er(H2DAPS)Cl2] (H4DAPS = 2,6-diacetylpyridine bis-(salicylhydrazone)) (1). The coordination polyhedron around the Er(III) ion features a slightly distorted pentagonal bipyramid formed by the pentagonal N3O2 chelate ring of the H2DAPS ligand in the equatorial plane and two apical chloride ligands. Detailed high-frequency/high-field electron paramagnetic resonance (HF-EPR) studies of 1 result in the precise determination of the crystal field (CF) splitting energies (0, 290 and 460 GHz) and effective g-values of the three lowest Kramers doublets (KDs) of the Er(III) ion. The obtained HF-EPR data are in good agreement with the results from CF analysis for the Er(III) ion based on the simulation of the dc magnetic data of 1. The results from dynamic susceptibility measurements indicate that there is no slow relaxation of magnetisation behaviour. This observation is discussed in terms of the electronic structure of 1 obtained from experimental and theoretical results.
- Добавил в систему: Корчагин Денис Владимирович